biology

Red-spectacled amazon

Red-spectacled amazon is a biology topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Red-spectacled amazon rather than just read about it. In short: The red-spectacled amazon (Amazona pretrei) is a species of parrot in the family Psittacidae. It is found in Argentina, Brazil, and Paraguay.

Key takeaways

Red-spectacled amazon belongs to biology; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Red-spectacled amazon to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Red-spectacled amazon from memory before moving on to harder problems.

Reference excerpt

The red-spectacled amazon (Amazona pretrei) is a species of parrot in the family Psittacidae. It is found in Argentina, Brazil, and Paraguay. Its natural habitats are subtropical or tropical dry forest, subtropical or tropical moist lowland forest, subtropical or tropical moist montane forest, dry savanna, and plantations. It is threatened by habitat loss. The Red-spectacled Amazon migrates seasonally from the northern region of the state of Rio Grande do Sul to the south-eastern state of Santa Catarina to feed on the mass-produced seeds of the Brazilian Pine. The species is distributed in the area of the frontier between southern Corrientes province in Argentina and the state of Rio Grande do Sul, Brazil. They are a quiet species with a relaxed disposition.

Description

The red-spectacled amazon is 32 cm (13 in) long. It is mostly green with some sparse red spots on head, variable extent of red on forehead, lores and around eyes, white eyerings, red on the bend of the wings with blue tips to secondaries and primaries and yellowish bill. Females have less red on the bend of the wing. Diet: 90 percent of the Red-spectacled amazon's diet that inhabits the wild contains Angustifolia seeds, those in captivity, their diets consist of vegetables along with Araucaria seeds.

Conservation and threats The red-spectacled amazon is a declining species as it is highly threatened by the destruction of the Aruacaria moist forests and the illegal exotic pet trade. An analysis of the extinct Amazona pretrei population records reveals that the species disappeared due to severe habitat loss, and in the past, the parrot's geographical range was at least 10% larger than the current range. The red-spectacled amazon is prized for its colorful feathers, mimicry ability, exotic appeal, and relative rarity, so eggs and live parrots are frequently smuggled from the wild and bred in captivity. It is estimated that nearly 500 chicks are stolen from their nests and sold in Brazilian cities every year.

References

Illustrations

Worked examples

Example 1 — a first encounter with Red-spectacled amazon

Start with the simplest possible case. Write down what Red-spectacled amazon claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In biology, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Red-spectacled amazon before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Red-spectacled amazon ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Red-spectacled amazon

In research: Red-spectacled amazon appears in biology research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Red-spectacled amazon in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Red-spectacled amazon is common in secondary-school and first-year university syllabi. It links to neighbouring topics Amazon parrots, Birds described in 1830, Birds of the Selva Misionera, so understanding it makes those chapters shorter.
In everyday life: Look for Red-spectacled amazon outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Red-spectacled amazon in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Red-spectacled amazon means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Red-spectacled amazon out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Red-spectacled amazon in simple terms?

The red-spectacled amazon (Amazona pretrei) is a species of parrot in the family Psittacidae. It is found in Argentina, Brazil, and Paraguay.

Why does Red-spectacled amazon matter?

Because it connects several biology ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Red-spectacled amazon?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Red-spectacled amazon.